Year	Number
1996	89.361701965332
1998	77.6595764160156
2000	73.0158767700195
2002	71.4285736083984
2003	66.331657409668
2004	60.6796112060547
2005	64.5631103515625
2006	53.1400947570801
2007	71.0144958496094
2008	81.25
2009	83.8862533569336
2010	72.9857788085938
2011	68.7203826904297
2012	72.9857788085938
2013	66.8246459960938
2014	59.523811340332
2015	57.1428565979004
2016	52.3809509277344
2017	55.238094329834
2018	58.0188674926758
2019	55.6603775024414
2020	53.7735862731934
2021	50.4716987609863
2022	54.7169799804688